I'd like to test the SPI communication between my nRF52833 DK and a ICM-20948 developer board. Keep in mind that the ICM-21948 is a device not listed in the NCS. To activate the SPI0 interface I created an overlay file with the following lines:
&spi0 {
status = "okay";
sck-pin = < 0x04 >;
mosi-pin = < 0x1c >;
miso-pin = < 0x1d >;
cs-gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
icm20948@0 {
compatible = "invensense,icm20948";
reg = <0>;
label = "ICM20948";
spi-max-frequency = <7000000>;
};
};
After the build the spi0 in the zephyr.dts is:
spi0: spi@40003000 {
compatible = "nordic,nrf-spi";
#address-cells = < 0x1 >;
#size-cells = < 0x0 >;
reg = < 0x40003000 0x1000 >;
interrupts = < 0x3 0x1 >;
status = "okay";
label = "SPI_0";
sck-pin = < 0x4 >;
mosi-pin = < 0x1c >;
miso-pin = < 0x1d >;
cs-gpios = < &gpio0 0x3 0x1 >;
icm20948@0 {
compatible = "invensense,icm20948";
reg = < 0x0 >;
label = "ICM20948";
spi-max-frequency = < 0x6acfc0 >;
};
};
So I can buil the application but in the overlay file I get an underline error that tell me
Only spi nodes accepted in /soc/spi@40003000/
cause the compatible property is not described by a yaml file like supported devices in the NCS.
Should I take care of this error or can I go on without the fear to run into future problems? Can I create yaml bindings files for my custom devices?
